[FR] Manually trigger the command instead of periodical check

[im-n1]

It would be cool if I could just run the command on demand and then inspect changes. In many cases you just can't tell what interval is the right one - one example for all is a http call via curl.

This basically should subsitude the thing we all do - run a command, hack something in separated terminal, run the command again and see the differences in output.

If enter key could be the trigger to spawn the command that would be even more epic.